The river water is flowing in the reverse direction.

The river water is flowing in the opposite direction.

This problem has a paradoxical answer.

He was plotting a rebellion against the king.

He outsmarted his competitors by using a contrarian business strategy.

He succeeded in business by going against the grain.

This game is easy if you think in reverse.

In order to find the inverse function, you need to solve the original function's equation for x and y.

He went into a frenzy and started destroying the room.

He was going off in anger.